Patent US1450709A successfully refreshed from Google Patents.
Patent US3175974A successfully refreshed from Google Patents.
US3175974A
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US
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Mineral lubricating oil compositions
Assignee: Pure Oil Co
•
Filing: 1961-08-31
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Granted: 1965-03-30
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Expires: 1981-08-31
Abstract
No abstract record available.
Inventors
- 👤 Rai Charanjit
- 👤 John B Braunwarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:46
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C10; C10M; C10M1/00; C10M1/08; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A MINERAL LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PORTION OF MINERAL LUBRICATING OIL AND ABOUT 0.1 TO 3.0 WT. PERCENT OF AN ANTIOXIDANT OF THE FORMULA
Claim 2
Dependent Claim
26 words
A MINERAL LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PORTION OF MINERAL LUBRICATING OIL AND ABOUT 0.1 TO 3.0 WT. PERCENT OF AN ANTIOXIDANT OF THE FORMULA
References Cited (Backward Citations)
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US2218283A
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US2568472A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |